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// graph-permissions · CustomObjectDefinition

CustomObjectDefinition.ReadWrite.AllMicrosoft Graph permission · High risk

Allows the app to read, create, update, and retire tenant-defined custom object definitions without a signed-in user.

Application permission

High risk

Manage all custom object definitions. Allows the app to read, create, update, and retire tenant-defined custom object definitions without a signed-in user.

ID19f10513-d519-42cf-b01a-b3b662f46b8f
ConsentAlways needs admin consent
RiskCan change data across the whole tenant.

Delegated permission

High risk

Manage all custom object definitions. Allows the app to read, create, update, and retire tenant-defined custom object definitions on behalf of the signed-in user.

ID469b592c-2844-41f0-b800-61afd6b449c1
ConsentNeeds admin consent
RiskCan change data across the whole tenant.

Grant it to an app

In the portal: App registrations › your app › API permissions › Add a permission › Microsoft Graph › Application permissions, then grant admin consent. Or with Graph PowerShell:

powershell5 lines
Connect-MgGraph -Scopes "Application.Read.All", "AppRoleAssignment.ReadWrite.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
$app   = Get-MgServicePrincipal -Filter "appId eq '<your app's client id>'"
New-MgServicePrincipalAppRoleAssignment -ServicePrincipalId $app.Id `
    -PrincipalId $app.Id -ResourceId $graph.Id -AppRoleId "19f10513-d519-42cf-b01a-b3b662f46b8f"

Ask for it when signing in

Delegated permissions act as the signed-in user, so the app can never do more than that user can.

powershell1 line
Connect-MgGraph -Scopes "CustomObjectDefinition.ReadWrite.All"

Which apps already have it?

powershell6 lines
# Apps that hold CustomObjectDefinition.ReadWrite.All as an application permission
Connect-MgGraph -Scopes "Application.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgServicePrincipalAppRoleAssignedTo -ServicePrincipalId $graph.Id -All |
    Where-Object AppRoleId -eq "19f10513-d519-42cf-b01a-b3b662f46b8f" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for CustomObjectDefinition.ReadWrite.All
Connect-MgGraph -Scopes "Application.Read.All", "Directory.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgOauth2PermissionGrant -All |
    Where-Object { $_.ResourceId -eq $graph.Id -and ($_.Scope -split " ") -contains "CustomObjectDefinition.ReadWrite.All" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other CustomObjectDefinition permissions

Check every app in your tenant → Permission explainer

Sources